From 5778bda4db0cc9dd291b6782281cd9bcbcb10dd9 Mon Sep 17 00:00:00 2001
From: Hermet Park <hermet@lottiefiles.com>
Date: Mon, 14 Aug 2023 16:35:20 +0900
Subject: [PATCH] loader/lottie: do not build layers if the frame is out.

---
 src/loaders/lottie/tvgLottieBuilder.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/loaders/lottie/tvgLottieBuilder.cpp b/src/loaders/lottie/tvgLottieBuilder.cpp
index ba3cb50a..5c224bda 100644
--- a/src/loaders/lottie/tvgLottieBuilder.cpp
+++ b/src/loaders/lottie/tvgLottieBuilder.cpp
@@ -43,6 +43,16 @@ static bool _invisible(LottieGroup* group, int32_t frameNo)
     else return false;
 }
 
+static bool _invisible(LottieLayer* layer, int32_t frameNo)
+{
+    if (frameNo < layer->inFrame || frameNo > layer->outFrame) {
+        if (layer->scene) layer->scene->opacity(0);
+        return true;
+    }
+
+    return _invisible(static_cast<LottieGroup*>(layer), frameNo);
+}
+
 
 static bool _updateTransform(LottieTransform* transform, int32_t frameNo, bool autoOrient, Matrix& matrix, uint8_t& opacity)
 {